Update Manager
Zend Studio's Update Manager allows for the easy installation of extra plug-ins, the updating of existing features and the easy updating of Zend Studio with the latest offerings from Zend.
See the Workbench User Guide for more on
Note:
Additional user guides can be accessed from inside Zend Studio by going to Help | Help Contents, or from the Eclipse Online Documentation site (http://help.eclipse.org/helios/index.jsp).